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Mechanics

Physics

After this lesson, you should be able to:

  • Define work done on an object
  • Understand work done as an energy transfer
  • Calculate the net work done on an object as the sum of the work done by each force acting on the object
  • Calculate the net work done on an object as the work done by the net force acting on the object
  • Understand positive work done on a system as energy transferred to the system, increasing the energy of the system
  • Understand negative work done on a system as energy transferred away from the system, decreasing the energy of the system
  • State the work-energy theorem as “the net work done on an object equals the change in the kinetic energy of the object”
  • Apply the work-energy theorem to objects moving on horizontal and incline planes, with and without friction

 

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